Display panel and display device

ABSTRACT

Disclosed are a display panel and a display device. The display panel includes a base substrate, and a first display region and a second display region that are located on the base substrate, where the first display region includes a plurality of first sub-pixels and a plurality of transparent regions, the second display region includes a plurality of second sub-pixels, and a distribution density of the first sub-pixels is smaller that of the second sub-pixels; and an area occupied by the first sub-pixels is smaller than that occupied by the second sub-pixels.

The present application is a continuation of U.S. patent application No.U.S. Ser. No. 18/307,853, filed on Apr. 27, 2023. The U.S. patentapplication No. U.S. Ser. No. 18/307,853 is a continuation-in-part ofU.S. patent application No. U.S. Ser. No. 16/834,492, filed on Mar. 30,2020, which claims the priority from Chinese Patent Application No.201911130156.0, filed with the Chinese Patent Office on Nov. 18, 2019,and entitled “DISPLAY PANEL AND DISPLAY DEVICE”. The afore-mentionedpatent applications are hereby incorporated by reference in itsentirety.

FIELD

The present disclosure relates to the field of display technologies, andin particular to a display panel and a display device.

BACKGROUND

With the continuous development of display technologies, people'srequirements on a display device are getting higher and higher. Theyhave not only required the display device to have basic displayfunctions, but also required the display device to have certain imagingand recognition functions, such as photographing functions and facerecognition and unlocking functions, which requires the integration of acamera and an infrared face recognition structure in a display panel.

In a display device of the related art, the camera and the infrared facerecognition structure are set in a non-display region, but such asetting occupies a large part of the non-display region, resulting in adecrease in the screen-to-body ratio of the display region, which is notconducive to the realization of full screen display.

SUMMARY

In one aspect, the embodiments of the present disclosure provide adisplay panel including: a base substrate, and a first display regionand a second display region that are arranged on the base substrate;

-   -   wherein the first display region includes a plurality of first        sub-pixels and a plurality of transparent regions, the second        display region includes a plurality of second sub-pixels, and a        distribution density of the first sub-pixels is smaller than        that of the second sub-pixels; and    -   an area occupied by the first sub-pixels is smaller than that        occupied by the second sub-pixels.

In a possible implementation, in the display panel provided by theembodiments of the present disclosure, first sub-pixels arranged in asame row are electrically connected with a same first initial signalline extending in a first direction; first sub-pixels arranged indifferent rows are electrically connected with different first initialsignal lines extending in the first direction, respectively; and

-   -   second sub-pixels in every two adjacent rows are electrically        connected with a same second initial signal line extending in        the first direction.

In a possible implementation, the display panel provided by theembodiments of the present disclosure further includes: trace regionsarranged between every two adjacent first sub-pixels in the firstdirection;

-   -   where, the every two adjacent first sub-pixels in the first        direction are electrically connected with a same third initial        signal line extending in a second direction in the trace        regions; and    -   the first direction and the second direction are perpendicular        to each other.

In a possible implementation, in the display panel provided by theembodiments of the present disclosure, each of the first sub-pixels atleast includes a semiconductor layer, a gate layer, a source-drainelectrode layer and a shielding electrode; and

-   -   an orthographic projection of the shielding electrode on the        base substrate at least covers an orthographic projection of the        semiconductor layer on the base substrate.

In a possible implementation, in the display panel provided by theembodiments of the present disclosure, the third initial signal line isarranged at a same layer as a source-drain electrode layer, and thethird initial signal line is arranged at different layers from the firstinitial signal line and the second initial signal line.

In a possible implementation, in the display panel provided by theembodiments of the present disclosure, the shielding electrode iselectrically connected with the corresponding source-drain electrodelayer.

In a possible implementation, the display panel provided by theembodiments of the present disclosure further includes: a first voltagesignal line, a second voltage signal line and a third voltage signalline that are arranged on the base substrate;

-   -   the first voltage signal line and the second voltage signal line        are configured to provide a positive voltage signal,        respectively, and the third voltage signal line is configured to        provide a negative voltage signal; and    -   the first voltage signal line is electrically connected with the        first sub-pixels, the second voltage signal line is electrically        connected with the second sub-pixels, and the third voltage        signal line is electrically connected with the first sub-pixels        and the second sub-pixels, respectively.

In a possible implementation, in the display panel provided by theembodiments of the present disclosure, a voltage applied to the firstvoltage signal line is greater than a voltage applied to the secondvoltage signal line.

In a possible implementation, the display panel provided by theembodiments of the present disclosure further includes: an infraredsensor and an infrared receiver that are arranged in the first displayregion;

-   -   the infrared sensor and the infrared receiver are arranged        between the base substrate and the first sub-pixels; and    -   an orthographic projection of the infrared sensor on the base        substrate and an orthographic projection of the infrared        receiver on the base substrate have an overlapping area with an        orthographic projection of the plurality of first sub-pixels on        the base substrate, respectively.

In another aspect, the embodiments of the present disclosure alsoprovide a display device including the display panel provided by any oneof the aforementioned embodiments.

In a possible implementation, the display device provided by theembodiments of the present disclosure further includes: a groovearranged in the display panel, and a camera arranged in the groove.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of the plane structure of a display devicein the related art.

FIG. 2 is a first schematic structural diagram of a display panelprovided by embodiments of the present disclosure.

FIG. 3 is one of schematic diagrams of trace structures in a firstdisplay region of the display panel provided by embodiments of thepresent disclosure.

FIG. 4A is a first schematic diagram of local circuit structures in thefirst display region of FIG. 3 provided by embodiments of the presentdisclosure.

FIG. 4B is a schematic diagram of local circuit structures in the seconddisplay region of FIG. 3 provided by embodiments of the presentdisclosure.

FIG. 5A is a second schematic diagram of local circuit structures in thefirst display region of FIG. 3 provided by embodiments of the presentdisclosure.

FIG. 5B is a third schematic diagram of local circuit structures in thefirst display region of FIG. 3 provided by embodiments of the presentdisclosure.

FIG. 6 is a schematic diagram of cross-sectional structure of a firstsub-pixel provided by embodiments of the present disclosure.

FIG. 7 is a schematic diagram of cross-sectional structure of a secondsub-pixel provided by embodiments of the present disclosure.

FIG. 8 is a second schematic structural diagram of the display panelprovided by embodiments of the present disclosure.

FIG. 9 is a first schematic diagram of arrangement of pixels in thefirst display region and the second display region provided byembodiments of the present disclosure.

FIG. 10 is a second schematic diagram of arrangement of pixels in thefirst display region and the second display region provided byembodiments of the present disclosure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

As shown in FIG. 1 , a display device of the related art includes adisplay region 100 and a peripheral region 200 surrounding the displayregion 100. Some functional devices of the display device are disposedin the peripheral region 200, such as a camera 201, an infrared imagingstructure 203, an earphone 202, etc.

The infrared imaging structure 203 is set as an example of replacing atraditional fingerprint identification and unlocking structure, andrecognizes a human face through infrared imaging, thereby achieving thepurpose of unlocking the display device. However, setting functionalcomponents such as the infrared imaging structure 203 in the peripheralregion 200 reduces the screen-to-body ratio of the display region 100,which is not conducive to realization of full screen display. Therefore,it is an urgent technical problem to be solved by those skilled in theart how to make the display device have the imaging function withoutreducing the screen-to-body ratio of the display region.

Based on the aforementioned problems existing in the related art, theembodiments of the present disclosure provide a display panel and adisplay device. In order to make the objectives, technical solutions andadvantages of the present disclosure clearer, the implementation of thedisplay panel and display device provided by the embodiments of thepresent disclosure will be described in detail below in conjunction withthe accompanying drawings. It should be understood that, the preferredembodiments described hereafter are only intended to illustrate andexplain the present disclosure, rather than limiting the presentdisclosure. Also, the embodiments in this application and the featuresin various embodiments may be combined with each other without conflict.

Unless otherwise defined, technical or scientific terms used in thepresent disclosure shall have the general meanings understood by thoseof ordinary skills in the art to which the present disclosure pertains.The words “first”, “second” and the like used in the present disclosuredo not denote any order, quantity or importance, but are only used todistinguish different constituent parts. “including” or “include” andthe like similar words mean that the elements or articles appearingbefore the word encompass the elements or articles listed after the wordand their equivalents, and do not exclude other elements or articles.“connection” or “connected” and the like similar words are not limitedto physical or mechanical connections, but may include electricalconnection, whether direct or indirect. “upper”, “lower”, “left”,“right” and the like are only used for indicating a relative positionalrelationship. When the absolute position of a described object changes,the relative positional relationship may also change accordingly.

The shapes and sizes of the components in the drawings do not reflectthe true proportions, and the purpose is only to schematicallyillustrate the disclosure of the present disclosure.

Particularly, the embodiments of the present disclosure provide adisplay panel, as shown in FIG. 2 , which includes a base substrate, anda first display region A1 and a second display region A2 that arelocated on the base substrate;

-   -   the first display region A1 includes a plurality of first        sub-pixels P1 and a plurality of transparent regions B, the        second display region A2 includes a plurality of second        sub-pixels P2, and a distribution density of the first        sub-pixels P1 is smaller than a distribution density of the        second sub-pixels P2; and    -   an area occupied by the first sub-pixels P1 is smaller than an        area occupied by the second sub-pixels P2.

Particularly, in the display panel provided by the embodiments of thepresent disclosure, by setting the first display region and the seconddisplay region with different distribution densities of sub-pixels inthe display region, the distribution density of the first sub-pixels inthe first display region is smaller than the distribution density of thesecond sub-pixels, so that larger gap regions exist between adjacentfirst sub-pixels in the first display region, that is, transparentregions located between the adjacent first sub-pixels are formed, and bymaking the area occupied by the first sub-pixels be smaller than thearea occupied by the second sub-pixels in the second display region, thearea of the transparent regions is further increased. Therefore, someimaging structures can be arranged between the base substrate and thefirst sub-pixels, and the imaging structures can conduct imaging throughtransparent regions, which not only can meet the requirement of theimaging function of the display device, but also can cause no reductionof the area of the display region, and thus it is conducive torealization of full screen display.

It should be noted that, in the display panel provided by theembodiments of the present disclosure, particularly, the pixel circuitsin each of the first sub-pixels can be compactly arranged by reducingthe pixel circuits in each of the first sub-pixels and the line width ofrelated signal lines and reducing the line spacing between adjacentlines, such as, reducing the line spacing between adjacent data lines D1in the first display region A1. The area occupied by each of the firstsub-pixels can be reduced by comparing compact pixel circuits in thefirst sub-pixels with tiled pixel circuits in the second sub-pixels inthe second display region.

Optionally, as shown in FIG. 4A, FIG. 4B, FIG. 5A and FIG. 5B, thedisplay panel provided by the embodiments of the present disclosurefurther includes: a plurality of first pixel circuits C1 in the firstdisplay region A1 and a plurality of second pixel circuits C2 in thesecond display region A2 (FIG. 4B takes only one second pixel circuit C2as an example for illustration); where each of columns of the firstpixel circuits C1 corresponds to a first data line D1, and each ofcolumns of the second pixel circuits C2 corresponds to a second dataline D2; and a distance between two adjacent columns of the first pixelcircuits C1 is smaller than a distance between two adjacent columns ofthe second pixel circuits C2. During specific implementation, thedistance between two adjacent columns of the first pixel circuits may beobtained by measuring a distance between two adjacent data linescorresponding to the two adjacent columns of the first pixel circuits.For example, as shown in FIG. 5B, the distance between two adjacentcolumns of the first pixel circuits C1 may be obtained by measuring adistance d between two adjacent first data lines D1.

Certainly, a method similar to the above method for measuring thedistance between two adjacent columns of the first pixel circuits C1 maybe adopted to measure the distance between two adjacent columns of thesecond pixel circuits C2, which will not be repeated here.

Optionally, in the display panel provided by the embodiments of thepresent disclosure, the first display region may be located in an regionwhere the top or bottom end of the second display region is located, ormay also be located in the second display region so that the seconddisplay region surrounds the first display region. Also, the width ofthe first display region in a first direction F1 may be smaller than thewidth of the second display region in the first direction F1, and thefirst display region and the second display region are arranged in asecond direction F2. The first direction F1 may be the extendingdirection of a gate line, and the second direction F2 may be theextending direction of a data line.

Optionally, in the display panel provided by the embodiments of thepresent disclosure, as shown in FIG. 3 , FIG. 4A and FIG. 4B, the firstsub-pixels P1 arranged in a same row are electrically connected with asame first initial signal line Vinit1 extending in the first direction;the first sub-pixels P1 located in different rows are electricallyconnected with first initial signal lines Vinit1 which are arranged indifferent rows and extend in the first direction, respectively; and

-   -   the second sub-pixels P2 in every two adjacent rows are        electrically connected with a same second initial signal line        Vinit2 extending in the first direction.

Particularly, in the display panel provided by the embodiments of thepresent disclosure, the first sub-pixels located in the same row areelectrically connected with a first initial signal line, and each row offirst sub-pixels is provided with a first initial signal linecorresponding thereto. Compared with the same second initial signal lineshared by the second sub-pixels in two adjacent rows in the seconddisplay region, the first initial signal line may be arranged close tothe first sub-pixels with small spacings between the lines, therebyfurther increasing the area of the transparent regions.

Optionally, in the display panel provided by the embodiments of thepresent disclosure, as shown in FIG. 5A and FIG. 5B, the display panelfurther includes: trace regions L located between every two adjacentfirst sub-pixels P1 in the first direction F1;

where, the every two adjacent first sub-pixels P1 in the first directionF1 share a same third initial signal line Vinit3 extending in the seconddirection F2 in the trace regions L; and

-   -   the first direction F1 and the second direction F2 are        perpendicular to each other.

Optionally, in the display panel provided by the embodiments of thepresent disclosure, as shown in FIG. 5A and FIG. 5B, two adjacent firstsub-pixels P1 arranged in the same row (such as, the row direction isthe first direction F1) are electrically connected with the same thirdinitial signal line Vinit3 extending in the second direction F2; thefirst initial signal line Vinit1 is electrically connected with thethird initial signal line Vinit3; and the first direction F1 and thesecond direction F2 intersect with each other.

Optionally, in the display panel provided by the embodiments of thepresent disclosure, as shown in FIG. 5A and FIG. 5B, every two adjacentfirst sub-pixels P1 arranged in the same row (such as, the row directionis the first direction F1) are electrically connected with the samethird initial signal line Vinit3 extending in the second direction F2;the first initial signal line Vinit1 is electrically connected with thethird initial signal line Vinit3; and the first direction F1 and thesecond direction F2 intersect with each other.

Particularly, in the display panel provided by the embodiments of thepresent disclosure, the display panel further includes trace regions Llocated between adjacent first sub-pixels, and traces in each of thetrace regions are set in a compact manner with small spacingstherebetween, thereby increasing the area of the transparent regions.Also, the traces to which the same signal is applied may be connectedinto one trace in each trace region, such as the third initial signalline. At positions corresponding to the first sub-pixels, each row offirst sub-pixels is provided with a first initial signal line. However,in each of the trace regions, the traces in the each of the traceregions, such as the first initial signal lines, may be electricallyconnected with one third initial signal line. That is, there is only onethird initial signal line in each of trace regions. Such a setting notonly ensures the effective transmission of signals, but also reduces thearea occupied by the trace regions.

Optionally, in the display panel provided by the embodiments of thepresent disclosure, as shown in FIG. 6 , each of the first sub-pixels atleast includes a first semiconductor layer (first P—Si), a first gatelayer (first Gate 11), a first source-drain electrode layer (first SD)and a first shielding electrode (first LS); and

-   -   an orthographic projection of the first shielding electrode        (first LS) on the base substrate 1 at least covers an        orthographic projection of the first semiconductor layer (first        P—Si) on the base substrate 1.

Optionally, in the display panel provided by the embodiments of thepresent disclosure, the third initial signal line Vinit3 is arranged atthe same layer as the first source-drain electrode layer (first SD), andthe third initial signal line Vinit3 is arranged at different layersfrom the first initial signal line Vinit1 and the second initial signalline Vinit2.

Particularly, in the display panel provided by the embodiments of thepresent disclosure, the display panel includes a buffer layer, asemiconductor layer, a first gate insulating layer, a gate layer, asecond gate insulating layer, a gate trace layer, an interlayerdielectric layer, a source-drain electrode layer, a planarization layerand a pixel electrode layer which are sequentially located on the basesubstrate. In the first display region, an infrared imaging structuremay be disposed between a first sub-pixel region and the base substrate,and the infrared light emitted by the infrared imaging structure mayaffect the semiconductor layer. Therefore, in order to avoid theinfluence on the semiconductor layer, a shielding electrode layer may bedisposed between the base substrate and the buffer layer, and theorthographic projection of the shielding electrode layer on the basesubstrate at least covers the orthographic projection of thesemiconductor layer on the base substrate, so as to protect thesemiconductor layer, and the shielding electrode is not included in aregion other than the first sub-pixels region, so as to avoid reductionof the area of the transparent regions.

Optionally, in the display panel provided by the embodiments of thepresent disclosure, as shown in FIG. 6 , the first shielding electrode(first LS) is electrically connected with the first source-drainelectrode layer (first SD), and the first source-drain electrode layer(first SD) is electrically connected with an anode of a light emittingdevice in the first display region A1.

Particularly, in the display panel provided by the embodiments of thepresent disclosure, the first shielding electrode may be electricallyconnected with the first source-drain electrode layer, so that acorresponding thin film transistor forms a double gate structure toreduce leakage current of the thin film transistor and thus improve thepixel driving performance.

It should be noted that, in the display panel provided by theembodiments of the present disclosure, in order to ensure theconsistency of the manufacturing process, shielding electrodes may alsobe arranged at the positions corresponding to the second sub-pixels inthe second display region, and of course, shielding electrodes may notbe arranged in the second display region. Selection may be madeaccording to actual needs, which is not specifically limited here.

Optionally, in the display panel provided by the embodiments of thepresent disclosure, as shown in FIG. 7 , each of the second sub-pixelsP2 at least includes a second semiconductor layer (second P—Si), asecond gate layer (second Gate21), a second source-drain electrode layer(second SD) and a second shielding electrode (second LS); and anorthographic projection of the second shielding electrode (second LS) onthe base substrate 1 at least partially overlaps an orthographicprojection of the second semiconductor layer (second P—Si) on the basesubstrate 1.

Optionally, in the display panel provided by the embodiments of thepresent disclosure, as shown in FIG. 7 , the second shielding electrode(second LS) is electrically connected with the second source-drainelectrode layer (second SD).

Optionally, in the display panel provided by the embodiments of thepresent disclosure, a distribution density of light emitting devices inthe first display region A1 is smaller than a distribution density oflight emitting devices in the second display region A2.

Optionally, in the display panel provided by the embodiments of thepresent disclosure, an area of an anode of each of light emittingdevices in the first display region A1 is greater than or equal to anarea of an anode of each of light emitting devices in the second displayregion A2.

Optionally, the display panel provided by the embodiments of the presentdisclosure further includes a first voltage signal line (such as VDD1 inFIG. 4A, VDD2 in FIG. 4B), a second voltage signal line (an initialsignal line) and a third voltage signal line (VSS) which are located onthe base substrate;

-   -   the first voltage signal line and the second voltage signal line        are configured to provide a positive voltage signal,        respectively, and the third voltage signal line is configured to        provide a negative voltage signal; and    -   the first voltage signal line is electrically connected with the        first sub-pixels, the second voltage signal line is electrically        connected with the second sub-pixels, and the third voltage        signal line is electrically connected with the first sub-pixels        and the second sub-pixels, respectively.

Particularly, in the display panel provided by the embodiments of thepresent disclosure, since the distribution density of the firstsub-pixels in the first display region is smaller than the distributiondensity of the second sub-pixels in the second display region, that is,the number of sub-pixels set in the first display region is smaller thanthe number of sub-pixels set in the second display region. Thebrightness of the first display region will be smaller than thebrightness of the second display region when the same gray scale isinput, resulting in uneven overall display brightness of the displaypanel. In order to reduce the brightness difference between the firstdisplay region and the second display region, two voltage signal lines,namely the first voltage signal line and the second voltage signal line,are arranged in a non-display region, where the first voltage signalline is electrically connected with the first sub-pixels, and the secondvoltage signal line is electrically connected with the secondsub-pixels, and voltages with different intensities can be applied tothe first voltage signal line and the second voltage signal line toadjust the brightness difference between the first display region andthe second display region.

Optionally, in the display panel provided by the embodiments of thepresent disclosure, the voltage applied to the first voltage signal lineis greater than the voltage applied to the second voltage signal line.

Particularly, in the display panel provided by the embodiments of thepresent disclosure, the voltage applied to the first voltage signal linemay be increased, so that the voltage applied to the first voltagesignal line is greater than the voltage applied to the second voltagesignal line, and thus the brightness of the light emitting deviceconnected with the pixel circuit corresponding to the first voltagesignal line is greater than the brightness of the light emitting deviceconnected with the pixel circuit corresponding to the second voltagesignal line, thereby compensating for the brightness difference causedby the distribution density difference of the first sub-pixels and thesecond sub-pixels.

It should be noted that, in the display panel provided by theembodiments of the present disclosure, when there is no obviousrequirement on the brightness in the first display region, for examplewhen the first display region conducts display of a fixed image and onlythe second display region refreshes, the same voltage signal may beapplied to the first voltage signal line and the second voltage signalline, and the selection may be made specifically according to the actualuse situation, which is not specifically limited here.

Optionally, in the display panel provided by the embodiments of thepresent disclosure, as shown in FIGS. 8-10 , the display panel furtherincludes an infrared sensor R1 and an infrared receiver R2 located inthe first display region A1;

-   -   the infrared sensor R1 and the infrared receiver R2 are located        between the base substrate and the first sub-pixels P1; and    -   an orthographic projection of the infrared sensor R1 on the base        substrate and an orthographic projection of the infrared        receiver R2 on the base substrate have an overlapping area with        an orthographic projection of the plurality of first sub-pixels        P1 on the base substrate, respectively. Optionally, the infrared        sensor R1 and the infrared receiver R2 both cover a plurality of        first sub-pixels P1 and a plurality of transparent regions B.

Particularly, in the display panel provided by the embodiments of thepresent disclosure, an infrared imaging structure may be arranged in thefirst display region, and specifically, the infrared sensor and theinfrared receiver may be arranged in the first display region, so thatthe infrared sensor and the infrared receiver are located between thebase substrate and the first sub-pixels, the infrared sensor can emitinfrared rays through the transparent regions, and the infrared receiverreceives reflected infrared rays through the transparent regions,thereby obtaining the characteristics of a human face, identifyinginformation of the human face, and realizing the function of unlockingby the human face.

In the display panel provided by the embodiments of the presentdisclosure, as shown in FIGS. 9-10 , the area of each sub-pixel in thefirst display region A1 is the same as the area of each sub-pixel in thesecond display region A2. Since the number of sub-pixels in the firstdisplay region A1 is less than the number of sub-pixels in the seconddisplay region A2, the distribution density of the sub-pixels in thefirst display region A1 is smaller than the distribution density of thesub-pixels in the second display region A2, thereby improving thetransmittance of the first display region A1.

During specific implementation, in the display panel provided by theembodiments of the present disclosure, the area of the pixel circuit ofeach sub-pixel in the first display region A1 and the second displayregion A2 is the same, or the area of the light emitting device of eachsub-pixel in the first display region A1 and the second display regionA2 is the same, or the area of the anode of each sub-pixel in the firstdisplay region A1 and the second display region A2 is the same.

Optionally, in the display panel provided by the embodiments of thepresent disclosure, as shown in FIG. 9 , pixels per inch (PPI) of thefirst display region A1 is half of the PPI of the second display regionA2.

Optionally, in the display panel provided by the embodiments of thepresent disclosure, as shown in FIG. 10 , the PPI of the first displayregion A1 is a quarter of the PPI of the second display region A2.

Based on the same inventive concept, the embodiments of the presentdisclosure also provide a display device, which includes the displaypanel provided by any one of the aforementioned embodiments.

Optionally, the display device provided by the embodiments of thepresent disclosure further includes a groove located in the displaypanel and a camera located in the groove.

Particularly, in the display device provided by the embodiments of thepresent disclosure, the groove may be arranged in the display panel foraccommodating various components of the camera. Specifically, the groovemay be arranged in a peripheral region surrounding the first displayregion and the second display region, or alternatively may be located inthe first display region so that the first display region is disposedaround the groove.

Optionally, in the display device provided by the embodiments of thepresent disclosure, the camera is located at a side, away from a displaysurface of the display panel, of the display panel; and an orthographicprojection of the camera on the base substrate is at least partiallylocated in the first display region. The specific arrangement positionof the camera can be selected according to the actual design, and is notspecifically limited here.

The display device may be a terminal display device such as a mobilephone, a tablet computer, a notebook computer, a display and the like,and the display device has all the advantages of the display panelprovided by any one of the aforementioned embodiments, and can bespecifically implemented with reference to the display panel provided byany one of the aforementioned embodiments, which will not be describedin details here anymore.

The embodiments of the present disclosure provide a display panel and adisplay device. The display panel includes a base substrate, and a firstdisplay region and a second display region that are located on the basesubstrate, where the first display region includes a plurality of firstsub-pixels and a plurality of transparent regions, the second displayregion includes a plurality of second sub-pixels, and the distributiondensity of the first sub-pixels is smaller than the distribution densityof the second sub-pixels; and the area occupied by the first sub-pixelsis smaller than the area occupied by the second sub-pixels. By reducingthe distribution density of the first sub-pixels in the first displayregion and reducing the area occupied by the first sub-pixels, the areaof the transparent regions in the first display region is increased, andthus imaging structures can be arranged in the transparent regions, sothat the first display region can not only be used for displaying toimprove the screen-to-body ratio of the display region, but also be usedfor imaging through the transparent regions, thereby meeting variousdemands of users.

Obviously, those skilled in the art can make various changes andmodifications to the present disclosure without departing from thespirit and scope of the present disclosure. As such, if thesemodifications and variations of the present disclosure fall within thescope of the claims of the present disclosure and their equivalenttechnologies, the present disclosure is also intended to include thesemodifications and variations.

What is claimed is:
 1. A display panel, comprising: a base substrate,and a first display region and a second display region that are arrangedon the base substrate; wherein the first display region comprises aplurality of first sub-pixels and a plurality of transparent regions,the second display region comprises a plurality of second sub-pixels,and a distribution density of the first sub-pixels is smaller than thatof the second sub-pixels.
 2. The display panel according to claim 1,wherein first sub-pixels arranged in a same row are electricallyconnected with a same first initial signal line extending in a firstdirection; and first sub-pixels arranged in different rows areelectrically connected with first initial signal lines which arearranged in different rows and extend in the first direction,respectively.
 3. The display panel according to claim 2, wherein secondsub-pixels in every two adjacent rows are electrically connected with asame second initial signal line extending in the first direction.
 4. Thedisplay panel according to claim 2, further comprising: third initialsignal lines extending in a second direction; wherein, two adjacentfirst sub-pixels arranged in the same row are electrically connectedwith a same third initial signal line; the first initial signal line iselectrically connected with the third initial signal line; and the firstdirection and the second direction intersect with each other.
 5. Thedisplay panel according to claim 1, further comprising: a plurality offirst pixel circuits in the first display region, wherein each ofcolumns of the first pixel circuits corresponds to a first data line;and a plurality of second pixel circuits in the second display region,wherein each of columns of the second pixel circuits corresponds to asecond data line; wherein a distance between two adjacent columns of thefirst pixel circuits is smaller than a distance between two adjacentcolumns of the second pixel circuits.
 6. The display panel according toclaim 2, wherein each of the first sub-pixels at least comprises a firstsemiconductor layer, a first gate layer, a first source-drain electrodelayer and a first shielding electrode; and an orthographic projection ofthe first shielding electrode on the base substrate at least covers anorthographic projection of the first semiconductor layer on the basesubstrate.
 7. The display panel according to claim 6, wherein the firstsource-drain electrode layer is electrically connected with an anode ofa light emitting device in the first display region.
 8. The displaypanel according to claim 7, wherein a distribution density of lightemitting devices in the first display region is smaller than adistribution density of light emitting devices in the second displayregion.
 9. The display panel according to claim 6, wherein an area of ananode of each of light emitting devices in the first display region isgreater than or equal to an area of an anode of each of light emittingdevices in the second display region.
 10. The display panel according toclaim 6, the third initial signal line is arranged at a same layer asthe first source-drain electrode layer, and the third initial signalline is arranged at different layers from the first initial signal line.11. The display panel according to claim 1, wherein each of the secondsub-pixels at least comprises a second semiconductor layer, a secondgate layer, a second source-drain electrode layer and a second shieldingelectrode; and an orthographic projection of the second shieldingelectrode on the base substrate at least partially overlaps anorthographic projection of the second semiconductor layer on the basesubstrate.
 12. The display panel according to claim 11, wherein thesecond shielding electrode is electrically connected with the secondsource-drain electrode layer.
 13. The display panel according to claim1, further comprising: a first voltage signal line, a second voltagesignal line and a third voltage signal line that are arranged on thebase substrate; the first voltage signal line and the second voltagesignal line are configured to provide a positive voltage signal,respectively, and the third voltage signal line is configured to providea negative voltage signal; and the first voltage signal line iselectrically connected with the first sub-pixels, the second voltagesignal line is electrically connected with the second sub-pixels, andthe third voltage signal line is electrically connected with the firstsub-pixels and the second sub-pixels, respectively.
 14. The displaypanel according to claim 13, wherein a voltage applied to the firstvoltage signal line is greater than a voltage applied to the secondvoltage signal line.
 15. The display panel according to claim 1, furthercomprising: an infrared sensor and an infrared receiver that arearranged in the first display region; the infrared sensor and theinfrared receiver are arranged between the base substrate and the firstsub-pixels; and an orthographic projection of the infrared sensor on thebase substrate and an orthographic projection of the infrared receiveron the base substrate have an overlapping area with an orthographicprojection of the plurality of first sub-pixels on the base substrate,respectively.
 16. A display device, comprising the display panelaccording to claim
 1. 17. The display device according to claim 16,further comprising: a camera at a side, away from a display surface ofthe display panel, of the display panel; wherein an orthographicprojection of the camera on the base substrate is at least partiallylocated in the first display region.